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Finding the Fourth Proportional to 477,674.89, 715,550.65 and 221,145.86

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Solution

The fourth proportional to 477,674.89, 715,550.65 and 221,145.86 is: 331,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,674.89 : 715,550.65 = 221,145.86 : x
  2. Step 2: Convert to fraction form
    477,674.89/715,550.65 = 221,145.86/x
  3. Step 3: Cross multiply
    477,674.89x = 715,550.65 × 221,145.86
  4. Step 4: Simplify right side
    477,674.89x = 158,241,065,103.82
  5. Step 5: Solve for x
    x = 158,241,065,103.82/477,674.89
  6. Step 6: Final answer
    x = 331,273.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.